James "Jamie" Foley reflects on the moral and ethical implications of CRISPR in light of racial injustices in medicine and determines we must start building trust, especially with marginalized communities, to adequately address the questions around this emerging technology.

Plant biologist Caixia Gao was initially reluctant to take up gene editing using CRISPR–Cas9 — the technique that is sweeping through biology laboratories around the world. Her lab had already made mutations in 82 genes using an older technology,